feat: add TrezorKeyringV2 (and OneKeyKeyringV2)

[mathieuartu]

Related to: https://consensyssoftware.atlassian.net/browse/MUL-1321

Examples

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Note

Adds unified V2 adapters for hardware keyrings.

• New TrezorKeyringV2 and OneKeyKeyringV2 (extends EthKeyringWrapper) expose legacy keyrings via KeyringV2 and KeyringAccount
• Support bip44:derive-index and bip44:derive-path (BIP-44, legacy MEW, SLIP0044 testnet) with entropy-source validation and HD-path switching that clears registry
• getAccounts caches KeyringAccounts and handles locked devices (returns cache or throws), custom deserialize avoids device access until unlocked; deleteAccount implemented
• Refactor legacy trezor-keyring: make addressFromIndex protected; add getIndexForAddress; update call sites
• Export new V2 classes from index.ts; add extensive tests; raise coverage thresholds and wire package/tsconfig deps; README dependency graph updated

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